Internal-combustion engine



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ly itxeteeeett l f .mmetlser' @inject et tlte lefventltm te te pm.- Ale 'ft eenen-mettant whereby the pm-;.fa:1.g-;e- W lnetwet 1 the @wwwfeesten elu'mnlml :ml

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ttlether 'object et my invention it; tel

pt'l'lrvfle in such mi engine a Spring; een

fuelled?movable vulve attlepted te Close et' te lettleqt :t cemmumeettmg peseegevatjy lo fetee. between tleey eempeeeelon and eenllmetlmft elmmlme, wlxele the pieten is meer the eetl et its mmpteeeiou Stroke, :mtl yet permit the pieton te continue movement mul. te emuplete the ettelqe Y These :tml other olj'eete will be "telly 'realized ee lt proceed with my f ipee'cattoe.

lm. the drawings:

Figure l illustrates in L etmtml Vertleel,

eeetlmlelV View, am engine et the twe Cycle "type embmlymg my mventlen.

ltltg.` 2 is t central, verticaal, eeetieml View et the pistole en te etmtlleu: :settle/F elmwmgg ttmettlefttiem et tflettett It@ tenet.

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tlxe bete or etappm't tot e cylinder v stem the engl et the spying tl). The valve Stem l: is ptxlelelly provided with zt Collet er elmultler which Shoulder, in the recproca,- Vtten et the valve t7., Will normally reet 'ammini-stt the side et the fece plete 6, thereby litttmglj the extent et the outward move meet et the vulve, with respect te the tace et 'tlle piston l, due to the influence of the epxrlnp; t3. 'the depth of the recessvf is such ne te pemlt oit smell n'wetcl mvement or reepw'eeetml of the valve V, ne that its inner 'tege 9 may., ztsfllet'enztftel" explained, Conteet with the tace ot the pieton l) 01' the fece plete 6 tlet'eeu. A

'lhe eembuston chamber l] ie ptovicleel with e pateee-gewey 1t, which etli'otfle c0mnmnieeton between the compression @helm bei' C mail the combustion chamber l). ln this jnstffmee, the passageway ll taltee the eemplomeutal 'term of 'the valve V uml een sttutee at valve eeatwlxeteb'y the peeeegewey ll may be completely closed at pt'epel:

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times by the valve V. A small fuel chamber 12 is located in the shell of the Combustion chamber D, and is connected with a source of fuel supply at 13, controlled by a 'alve 14. From this chamber 12, a small conduit or feed port 15 opens inte the Combustion chamber l). A relatively small conduit or passageway 16 leads from the compression chamber tu; the combustion chamber l), and opens into1 the latter in close proximity to the feed discharge end` of the conduit 15. The passageway 16 is connected with the fuel chamber 12 by a branch passage or conduit 17', one leg of which, at least, is horizontally arranged, as shown at 18. Any suitable means for igniting the fuel in the, combustion chamber l) may be Cmployed, and l have shown a conventional spark plug 19 to indicate such means. The engine cylinder B is provided with an inlet port I and an exhaust port E.

The operation of the engine thus illustrated in Fig. 1 is such that on the power stroke of the piston l), the valve 14 is raised, and the fuel is admitted to the chamber 12, either by a forced feed (orany suitable means. not shown), and the. consumed gases are exhausted through the port E. A fresh suppl of air is admitted through the inlet port and upon the compression stroke of the piston P, the usual compression takes place in the chamber C. When the piston moving on its compression stroke, nears the end 20 of the cylinder B, the valve V projecting outwardly-from the face of the piston by reason of its being mounted upon the spring S, will contact with its seat and close the passageway 11 before the end of the compression stroke. The further movement of the piston l) to complete the compression stroke, will by reason of the passageway 11 being closed and the conduit or passageway 16 being relatively small, result necessarily in an increased pressure in the chamber C, so that air under high pressure will be forced through the conduit 16 and to some extent through the passageway 17, 1S and 15` and close the valve 14. The fuel will thus be forced through the chamber 12 and the passageway 15, thoroughly and completely mixed with the air and the desired vaporiy'ation will occur.

It will be understood, of course, that after the 'alve V has closed the passageway 11, the

movement of the piston P will not be arrested but the further compression stroke movement ofthe piston will continue, the relative position of the valve and piston being changed. In such further movement. the valve stem 4 will be actuated against the force, of the spring S. until as stated, the face 9 of the valve will approximately touch the face 10 of the piston llpon the sparking means` being applied, the explosion takes place in the cim'lbustion chamber ln). l'mmediately and before the force of the explosion is exhausted, the valve V is unseated, and the. passageway 11 is again opened (there being sullicient clearance between the rear face 9 of the valve and the face 10 of the piston for this pre liminary valve movement), and the full force of the explosion is thus practically and almost instantaneously exerted upon the entire face of the piston., forcing it back.

This arrangement whereby the valve closure for the passageway 11 `vieldingly held away from the face of the piston, during the major portion of the compression stroke, and shifts its position as the piston approaches dead center or the end of the compression stroke.y is of great :ulvant'.\ge, permitting the increase of air pressure in the cylinder, resulting in turn in the proper admixture or vaporiz/.atiou of the air and fuel and permitting also by the unseating of the valve, the complete explosive pressure to act upon the entire. surface of the piston at the moment of explosion.

ln the construction illustrated in Fig. 2, l have shown a modified form of valve mounting for the spring S. The piston P is provided with a recess 21 in which is positioned a disk or plate 22 connected with the valve stem Q3, the latter passing through a suitable aperture Q1 ii' the face of the piston l. Spiral springs 25 are suitably located in the recess 21 and tend to press the disk 22 outwardly. as shown. The action is similar to th` arrangement described with respect to the construction shown in Fi Y. 1.

ln Figs. il and 4. l show a ditl'erent orm of spring. for holding the valve V outwardl from the face ofthe piston. The piston is provided in this instance with an annular or circumlcrential extcriorly arranged groove 26 and with an interior recess 27. The valve stem passes through the face of the piston, as in the other forms. and its inner end is cornici-ted with a disk 28, provided with a lug 2f). .lt will be understood that the interii'u recess 2T extends to and communicates with the exterior groove 26 and that the lng 251 projects suliciently into the groove 2G so that one end of a spring 3() may .be secured thereto.

rThe spring il() is shown as bent at 31 into a different plane, as. indicated clearly in Fig. 3. so that a portion of the spring 30 will bear against. Vthe rear wall 32 of the recess or groove 26 in the piston. while the other portion of the. spring 30 will lic more nearly to the front wall of said groove 26. 1Vhen the piston shown in Fig. l has reached that point in its compress-:ion stroke where the valve V will seat and thus close the passageway 11, the further movement of the piston P will cause the spring 30 to yield so that the relative position of the valveI V and the piston will occur precisely as in the inner end of said valve being movable longitudinally relative to the piston, in the recess thereof, and a spriner inner end and normally holding said valve spaced from the piston.

7. An internal combustion engine comprising a compression chamber, a-piston movable therein, a combustion chamber, a passageway leading from the compression chamber to the combustion chamber, a port leading from the compression chamber to the combustion chamber, means carried by the piston for closing said passageway, and means normally holding said port closed but operable by eontaetwith the piston to open said port.

8. An internal combustion engine comprising a compression chamber, a piston movableltherein, a combustion chamber, a passageway leading from the compression chamber to the combustion chamber, a port leading from the compression chamber to the ombustion chamber, means carried by the piston for closing said passageway, and means normally holding said port closed but operable by Contact with the piston to o en said port after said passageway is close 9. An internal combustion engine com* prising a compression chamber, a piston movable therein, a combustion chamber, a

engaging said passageway leading from the compression chamber to the Combustion chamber, a port leading from the compression chamber to the combustion chamber, means carried by the piston for closing said passageway, and resilient means normally holding said port closed butc operable by Contact wlth the piston to open said port.

10. An internal combustion engine, comprising a cylinder, a piston therein, a combustion chamber, means for supplying fuel to said chamber, a passageway connecting said chamber and said cylinder and ineluding a valve seat, a smaller passageway or conduit leading from the cylinder and discharging into the chamber in proximity to the point of fuel supply thereto, and a yieldingiy mounted Valve adapted to elose the first named passageway before the piston reaches the end of its compression stroke, said valve being carried by a spring mounted on the piston.

In testimony that I claim the foregoing as my invention I aix my signature in the presence of two witnesses, this Gtlnday of March, A. D. 1919.

TARD G. WILLIAMS.

Witnesses:

W. H. LYON, P. 7. A'rwoon. 

